19666920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1801}}^1$

素因数の和:1835

約数の個数: 128

約数和(自身を含む): 72656640

約数和(自身を除く): 52989720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1801, 1820, 2184, 2730, 3602, 3640, 5403, 5460, 7204, 9005, 10806, 10920, 12607, 14408, 18010, 21612, 23413, 25214, 27015, 36020, 37821, 43224, 46826, 50428, 54030, 63035, 70239, 72040, 75642, 93652, 100856, 108060, 117065, 126070, 140478, 151284, 163891, 187304, 189105, 216120, 234130, 252140, 280956, 302568, 327782, 351195, 378210, 468260, 491673, 504280, 561912, 655564, 702390, 756420, 819455, 936520, 983346, 1311128, 1404780, 1512840, 1638910, 1966692, 2458365, 2809560, 3277820, 3933384, 4916730, 6555640, 9833460, 19666920]

約数ペア:

[(1, 19666920), (2, 9833460), (3, 6555640), (4, 4916730), (5, 3933384), (6, 3277820), (7, 2809560), (8, 2458365), (10, 1966692), (12, 1638910), (13, 1512840), (14, 1404780), (15, 1311128), (20, 983346), (21, 936520), (24, 819455), (26, 756420), (28, 702390), (30, 655564), (35, 561912), (39, 504280), (40, 491673), (42, 468260), (52, 378210), (56, 351195), (60, 327782), (65, 302568), (70, 280956), (78, 252140), (84, 234130), (91, 216120), (104, 189105), (105, 187304), (120, 163891), (130, 151284), (140, 140478), (156, 126070), (168, 117065), (182, 108060), (195, 100856), (210, 93652), (260, 75642), (273, 72040), (280, 70239), (312, 63035), (364, 54030), (390, 50428), (420, 46826), (455, 43224), (520, 37821), (546, 36020), (728, 27015), (780, 25214), (840, 23413), (910, 21612), (1092, 18010), (1365, 14408), (1560, 12607), (1801, 10920), (1820, 10806), (2184, 9005), (2730, 7204), (3602, 5460), (3640, 5403)]