20172052100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1\times {\mathrm{821}}^1$

素因数の和:1098

約数の個数: 144

約数和(自身を含む): 47197760400

約数和(自身を除く): 27025708300

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 97, 100, 149, 170, 194, 298, 340, 388, 425, 485, 596, 745, 821, 850, 970, 1490, 1642, 1649, 1700, 1940, 2425, 2533, 2980, 3284, 3298, 3725, 4105, 4850, 5066, 6596, 7450, 8210, 8245, 9700, 10132, 12665, 13957, 14453, 14900, 16420, 16490, 20525, 25330, 27914, 28906, 32980, 41050, 41225, 50660, 55828, 57812, 63325, 69785, 72265, 79637, 82100, 82450, 122329, 126650, 139570, 144530, 159274, 164900, 244658, 245701, 253300, 279140, 289060, 318548, 348925, 361325, 398185, 489316, 491402, 611645, 697850, 722650, 796370, 982804, 1223290, 1228505, 1353829, 1395700, 1445300, 1592740, 1990925, 2079593, 2446580, 2457010, 2707658, 3058225, 3981850, 4159186, 4914020, 5415316, 6116450, 6142525, 6769145, 7963700, 8318372, 10397965, 11865913, 12232900, 12285050, 13538290, 20795930, 23731826, 24570100, 27076580, 33845725, 41591860, 47463652, 51989825, 59329565, 67691450, 103979650, 118659130, 135382900, 201720521, 207959300, 237318260, 296647825, 403441042, 593295650, 806882084, 1008602605, 1186591300, 2017205210, 4034410420, 5043013025, 10086026050, 20172052100]

約数ペア:

[(1, 20172052100), (2, 10086026050), (4, 5043013025), (5, 4034410420), (10, 2017205210), (17, 1186591300), (20, 1008602605), (25, 806882084), (34, 593295650), (50, 403441042), (68, 296647825), (85, 237318260), (97, 207959300), (100, 201720521), (149, 135382900), (170, 118659130), (194, 103979650), (298, 67691450), (340, 59329565), (388, 51989825), (425, 47463652), (485, 41591860), (596, 33845725), (745, 27076580), (821, 24570100), (850, 23731826), (970, 20795930), (1490, 13538290), (1642, 12285050), (1649, 12232900), (1700, 11865913), (1940, 10397965), (2425, 8318372), (2533, 7963700), (2980, 6769145), (3284, 6142525), (3298, 6116450), (3725, 5415316), (4105, 4914020), (4850, 4159186), (5066, 3981850), (6596, 3058225), (7450, 2707658), (8210, 2457010), (8245, 2446580), (9700, 2079593), (10132, 1990925), (12665, 1592740), (13957, 1445300), (14453, 1395700), (14900, 1353829), (16420, 1228505), (16490, 1223290), (20525, 982804), (25330, 796370), (27914, 722650), (28906, 697850), (32980, 611645), (41050, 491402), (41225, 489316), (50660, 398185), (55828, 361325), (57812, 348925), (63325, 318548), (69785, 289060), (72265, 279140), (79637, 253300), (82100, 245701), (82450, 244658), (122329, 164900), (126650, 159274), (139570, 144530)]