20915700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 67662336

約数和(自身を除く): 46746636

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 31, 39, 50, 52, 60, 62, 65, 75, 78, 93, 100, 124, 130, 150, 155, 156, 173, 186, 195, 260, 300, 310, 325, 346, 372, 390, 403, 465, 519, 620, 650, 692, 775, 780, 806, 865, 930, 975, 1038, 1209, 1300, 1550, 1612, 1730, 1860, 1950, 2015, 2076, 2249, 2325, 2418, 2595, 3100, 3460, 3900, 4030, 4325, 4498, 4650, 4836, 5190, 5363, 6045, 6747, 8060, 8650, 8996, 9300, 10075, 10380, 10726, 11245, 12090, 12975, 13494, 16089, 17300, 20150, 21452, 22490, 24180, 25950, 26815, 26988, 30225, 32178, 33735, 40300, 44980, 51900, 53630, 56225, 60450, 64356, 67470, 69719, 80445, 107260, 112450, 120900, 134075, 134940, 139438, 160890, 168675, 209157, 224900, 268150, 278876, 321780, 337350, 348595, 402225, 418314, 536300, 674700, 697190, 804450, 836628, 1045785, 1394380, 1608900, 1742975, 2091570, 3485950, 4183140, 5228925, 6971900, 10457850, 20915700]

約数ペア:

[(1, 20915700), (2, 10457850), (3, 6971900), (4, 5228925), (5, 4183140), (6, 3485950), (10, 2091570), (12, 1742975), (13, 1608900), (15, 1394380), (20, 1045785), (25, 836628), (26, 804450), (30, 697190), (31, 674700), (39, 536300), (50, 418314), (52, 402225), (60, 348595), (62, 337350), (65, 321780), (75, 278876), (78, 268150), (93, 224900), (100, 209157), (124, 168675), (130, 160890), (150, 139438), (155, 134940), (156, 134075), (173, 120900), (186, 112450), (195, 107260), (260, 80445), (300, 69719), (310, 67470), (325, 64356), (346, 60450), (372, 56225), (390, 53630), (403, 51900), (465, 44980), (519, 40300), (620, 33735), (650, 32178), (692, 30225), (775, 26988), (780, 26815), (806, 25950), (865, 24180), (930, 22490), (975, 21452), (1038, 20150), (1209, 17300), (1300, 16089), (1550, 13494), (1612, 12975), (1730, 12090), (1860, 11245), (1950, 10726), (2015, 10380), (2076, 10075), (2249, 9300), (2325, 8996), (2418, 8650), (2595, 8060), (3100, 6747), (3460, 6045), (3900, 5363), (4030, 5190), (4325, 4836), (4498, 4650)]