19907100

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:197

約数の個数: 144

約数和(自身を含む): 65516640

約数和(自身を除く): 45609540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 73, 75, 90, 100, 101, 108, 135, 146, 150, 180, 202, 219, 225, 270, 292, 300, 303, 365, 404, 438, 450, 505, 540, 606, 657, 675, 730, 876, 900, 909, 1010, 1095, 1212, 1314, 1350, 1460, 1515, 1818, 1825, 1971, 2020, 2190, 2525, 2628, 2700, 2727, 3030, 3285, 3636, 3650, 3942, 4380, 4545, 5050, 5454, 5475, 6060, 6570, 7300, 7373, 7575, 7884, 9090, 9855, 10100, 10908, 10950, 13140, 13635, 14746, 15150, 16425, 18180, 19710, 21900, 22119, 22725, 27270, 29492, 30300, 32850, 36865, 39420, 44238, 45450, 49275, 54540, 65700, 66357, 68175, 73730, 88476, 90900, 98550, 110595, 132714, 136350, 147460, 184325, 197100, 199071, 221190, 265428, 272700, 331785, 368650, 398142, 442380, 552975, 663570, 737300, 796284, 995355, 1105950, 1327140, 1658925, 1990710, 2211900, 3317850, 3981420, 4976775, 6635700, 9953550, 19907100]

約数ペア:

[(1, 19907100), (2, 9953550), (3, 6635700), (4, 4976775), (5, 3981420), (6, 3317850), (9, 2211900), (10, 1990710), (12, 1658925), (15, 1327140), (18, 1105950), (20, 995355), (25, 796284), (27, 737300), (30, 663570), (36, 552975), (45, 442380), (50, 398142), (54, 368650), (60, 331785), (73, 272700), (75, 265428), (90, 221190), (100, 199071), (101, 197100), (108, 184325), (135, 147460), (146, 136350), (150, 132714), (180, 110595), (202, 98550), (219, 90900), (225, 88476), (270, 73730), (292, 68175), (300, 66357), (303, 65700), (365, 54540), (404, 49275), (438, 45450), (450, 44238), (505, 39420), (540, 36865), (606, 32850), (657, 30300), (675, 29492), (730, 27270), (876, 22725), (900, 22119), (909, 21900), (1010, 19710), (1095, 18180), (1212, 16425), (1314, 15150), (1350, 14746), (1460, 13635), (1515, 13140), (1818, 10950), (1825, 10908), (1971, 10100), (2020, 9855), (2190, 9090), (2525, 7884), (2628, 7575), (2700, 7373), (2727, 7300), (3030, 6570), (3285, 6060), (3636, 5475), (3650, 5454), (3942, 5050), (4380, 4545)]