19900996815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{163}}^1\times {\mathrm{3221}}^1$

素因数の和:3437

約数の個数: 96

約数和(自身を含む): 38654102016

約数和(自身を除く): 18753105201

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 163, 285, 361, 399, 489, 665, 815, 1083, 1141, 1805, 1995, 2445, 2527, 3097, 3221, 3423, 5415, 5705, 7581, 9291, 9663, 12635, 15485, 16105, 17115, 21679, 22547, 37905, 46455, 48315, 58843, 61199, 65037, 67641, 108395, 112735, 176529, 183597, 294215, 305995, 325185, 338205, 411901, 428393, 525023, 882645, 917985, 1162781, 1235703, 1285179, 1575069, 2059505, 2141965, 2625115, 3488343, 3675161, 5813905, 6178515, 6425895, 7875345, 8139467, 9975437, 11025483, 17441715, 18375805, 24418401, 29926311, 40697335, 49877185, 55127415, 69828059, 122092005, 149631555, 189533303, 209484177, 349140295, 568599909, 947666515, 1047420885, 1326733121, 2842999545, 3980199363, 6633665605, 19900996815]

約数ペア:

[(1, 19900996815), (3, 6633665605), (5, 3980199363), (7, 2842999545), (15, 1326733121), (19, 1047420885), (21, 947666515), (35, 568599909), (57, 349140295), (95, 209484177), (105, 189533303), (133, 149631555), (163, 122092005), (285, 69828059), (361, 55127415), (399, 49877185), (489, 40697335), (665, 29926311), (815, 24418401), (1083, 18375805), (1141, 17441715), (1805, 11025483), (1995, 9975437), (2445, 8139467), (2527, 7875345), (3097, 6425895), (3221, 6178515), (3423, 5813905), (5415, 3675161), (5705, 3488343), (7581, 2625115), (9291, 2141965), (9663, 2059505), (12635, 1575069), (15485, 1285179), (16105, 1235703), (17115, 1162781), (21679, 917985), (22547, 882645), (37905, 525023), (46455, 428393), (48315, 411901), (58843, 338205), (61199, 325185), (65037, 305995), (67641, 294215), (108395, 183597), (112735, 176529)]