20001870

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:599

約数の個数: 128

約数和(自身を含む): 64281600

約数和(自身を除く): 44279730

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 27, 30, 35, 38, 42, 45, 54, 57, 63, 70, 90, 95, 105, 114, 126, 133, 135, 171, 189, 190, 210, 266, 270, 285, 315, 342, 378, 399, 513, 557, 570, 630, 665, 798, 855, 945, 1026, 1114, 1197, 1330, 1671, 1710, 1890, 1995, 2394, 2565, 2785, 3342, 3591, 3899, 3990, 5013, 5130, 5570, 5985, 7182, 7798, 8355, 10026, 10583, 11697, 11970, 15039, 16710, 17955, 19495, 21166, 23394, 25065, 30078, 31749, 35091, 35910, 38990, 50130, 52915, 58485, 63498, 70182, 74081, 75195, 95247, 105273, 105830, 116970, 148162, 150390, 158745, 175455, 190494, 210546, 222243, 285741, 317490, 350910, 370405, 444486, 476235, 526365, 571482, 666729, 740810, 952470, 1052730, 1111215, 1333458, 1428705, 2000187, 2222430, 2857410, 3333645, 4000374, 6667290, 10000935, 20001870]

約数ペア:

[(1, 20001870), (2, 10000935), (3, 6667290), (5, 4000374), (6, 3333645), (7, 2857410), (9, 2222430), (10, 2000187), (14, 1428705), (15, 1333458), (18, 1111215), (19, 1052730), (21, 952470), (27, 740810), (30, 666729), (35, 571482), (38, 526365), (42, 476235), (45, 444486), (54, 370405), (57, 350910), (63, 317490), (70, 285741), (90, 222243), (95, 210546), (105, 190494), (114, 175455), (126, 158745), (133, 150390), (135, 148162), (171, 116970), (189, 105830), (190, 105273), (210, 95247), (266, 75195), (270, 74081), (285, 70182), (315, 63498), (342, 58485), (378, 52915), (399, 50130), (513, 38990), (557, 35910), (570, 35091), (630, 31749), (665, 30078), (798, 25065), (855, 23394), (945, 21166), (1026, 19495), (1114, 17955), (1197, 16710), (1330, 15039), (1671, 11970), (1710, 11697), (1890, 10583), (1995, 10026), (2394, 8355), (2565, 7798), (2785, 7182), (3342, 5985), (3591, 5570), (3899, 5130), (3990, 5013)]