19916520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{751}}^1$

素因数の和:795

約数の個数: 128

約数和(自身を含む): 68221440

約数和(自身を除く): 48304920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 34, 39, 40, 51, 52, 60, 65, 68, 78, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 221, 255, 260, 312, 340, 390, 408, 442, 510, 520, 663, 680, 751, 780, 884, 1020, 1105, 1326, 1502, 1560, 1768, 2040, 2210, 2253, 2652, 3004, 3315, 3755, 4420, 4506, 5304, 6008, 6630, 7510, 8840, 9012, 9763, 11265, 12767, 13260, 15020, 18024, 19526, 22530, 25534, 26520, 29289, 30040, 38301, 39052, 45060, 48815, 51068, 58578, 63835, 76602, 78104, 90120, 97630, 102136, 117156, 127670, 146445, 153204, 165971, 191505, 195260, 234312, 255340, 292890, 306408, 331942, 383010, 390520, 497913, 510680, 585780, 663884, 766020, 829855, 995826, 1171560, 1327768, 1532040, 1659710, 1991652, 2489565, 3319420, 3983304, 4979130, 6638840, 9958260, 19916520]

約数ペア:

[(1, 19916520), (2, 9958260), (3, 6638840), (4, 4979130), (5, 3983304), (6, 3319420), (8, 2489565), (10, 1991652), (12, 1659710), (13, 1532040), (15, 1327768), (17, 1171560), (20, 995826), (24, 829855), (26, 766020), (30, 663884), (34, 585780), (39, 510680), (40, 497913), (51, 390520), (52, 383010), (60, 331942), (65, 306408), (68, 292890), (78, 255340), (85, 234312), (102, 195260), (104, 191505), (120, 165971), (130, 153204), (136, 146445), (156, 127670), (170, 117156), (195, 102136), (204, 97630), (221, 90120), (255, 78104), (260, 76602), (312, 63835), (340, 58578), (390, 51068), (408, 48815), (442, 45060), (510, 39052), (520, 38301), (663, 30040), (680, 29289), (751, 26520), (780, 25534), (884, 22530), (1020, 19526), (1105, 18024), (1326, 15020), (1502, 13260), (1560, 12767), (1768, 11265), (2040, 9763), (2210, 9012), (2253, 8840), (2652, 7510), (3004, 6630), (3315, 6008), (3755, 5304), (4420, 4506)]