21218759380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{48781}}^1$

素因数の和:49049

約数の個数: 96

約数和(自身を含む): 55072926720

約数和(自身を除く): 33854167340

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 239, 260, 364, 455, 478, 910, 956, 1195, 1673, 1820, 2390, 3107, 3346, 4780, 6214, 6692, 8365, 12428, 15535, 16730, 21749, 31070, 33460, 43498, 48781, 62140, 86996, 97562, 108745, 195124, 217490, 243905, 341467, 434980, 487810, 634153, 682934, 975620, 1268306, 1365868, 1707335, 2536612, 3170765, 3414670, 4439071, 6341530, 6829340, 8878142, 11658659, 12683060, 17756284, 22195355, 23317318, 44390710, 46634636, 58293295, 81610613, 88781420, 116586590, 151562567, 163221226, 233173180, 303125134, 326442452, 408053065, 606250268, 757812835, 816106130, 1060937969, 1515625670, 1632212260, 2121875938, 3031251340, 4243751876, 5304689845, 10609379690, 21218759380]

約数ペア:

[(1, 21218759380), (2, 10609379690), (4, 5304689845), (5, 4243751876), (7, 3031251340), (10, 2121875938), (13, 1632212260), (14, 1515625670), (20, 1060937969), (26, 816106130), (28, 757812835), (35, 606250268), (52, 408053065), (65, 326442452), (70, 303125134), (91, 233173180), (130, 163221226), (140, 151562567), (182, 116586590), (239, 88781420), (260, 81610613), (364, 58293295), (455, 46634636), (478, 44390710), (910, 23317318), (956, 22195355), (1195, 17756284), (1673, 12683060), (1820, 11658659), (2390, 8878142), (3107, 6829340), (3346, 6341530), (4780, 4439071), (6214, 3414670), (6692, 3170765), (8365, 2536612), (12428, 1707335), (15535, 1365868), (16730, 1268306), (21749, 975620), (31070, 682934), (33460, 634153), (43498, 487810), (48781, 434980), (62140, 341467), (86996, 243905), (97562, 217490), (108745, 195124)]