28140140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:255

約数の個数: 96

約数和(自身を含む): 72576000

約数和(自身を除く): 44435860

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 71, 76, 95, 133, 140, 142, 149, 190, 266, 284, 298, 355, 380, 497, 532, 596, 665, 710, 745, 994, 1043, 1330, 1349, 1420, 1490, 1988, 2086, 2485, 2660, 2698, 2831, 2980, 4172, 4970, 5215, 5396, 5662, 6745, 9443, 9940, 10430, 10579, 11324, 13490, 14155, 18886, 19817, 20860, 21158, 26980, 28310, 37772, 39634, 42316, 47215, 52895, 56620, 74053, 79268, 94430, 99085, 105790, 148106, 188860, 198170, 201001, 211580, 296212, 370265, 396340, 402002, 740530, 804004, 1005005, 1407007, 1481060, 2010010, 2814014, 4020020, 5628028, 7035035, 14070070, 28140140]

約数ペア:

[(1, 28140140), (2, 14070070), (4, 7035035), (5, 5628028), (7, 4020020), (10, 2814014), (14, 2010010), (19, 1481060), (20, 1407007), (28, 1005005), (35, 804004), (38, 740530), (70, 402002), (71, 396340), (76, 370265), (95, 296212), (133, 211580), (140, 201001), (142, 198170), (149, 188860), (190, 148106), (266, 105790), (284, 99085), (298, 94430), (355, 79268), (380, 74053), (497, 56620), (532, 52895), (596, 47215), (665, 42316), (710, 39634), (745, 37772), (994, 28310), (1043, 26980), (1330, 21158), (1349, 20860), (1420, 19817), (1490, 18886), (1988, 14155), (2086, 13490), (2485, 11324), (2660, 10579), (2698, 10430), (2831, 9940), (2980, 9443), (4172, 6745), (4970, 5662), (5215, 5396)]