19984091140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{241}}^1\times {\mathrm{24533}}^1$

素因数の和:24809

約数の個数: 72

約数和(自身を含む): 45633534408

約数和(自身を除く): 25649443268

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 241, 260, 338, 482, 676, 845, 964, 1205, 1690, 2410, 3133, 3380, 4820, 6266, 12532, 15665, 24533, 31330, 40729, 49066, 62660, 81458, 98132, 122665, 162916, 203645, 245330, 318929, 407290, 490660, 637858, 814580, 1275716, 1594645, 3189290, 4146077, 5912453, 6378580, 8292154, 11824906, 16584308, 20730385, 23649812, 29562265, 41460770, 59124530, 76861889, 82921540, 118249060, 153723778, 307447556, 384309445, 768618890, 999204557, 1537237780, 1998409114, 3996818228, 4996022785, 9992045570, 19984091140]

約数ペア:

[(1, 19984091140), (2, 9992045570), (4, 4996022785), (5, 3996818228), (10, 1998409114), (13, 1537237780), (20, 999204557), (26, 768618890), (52, 384309445), (65, 307447556), (130, 153723778), (169, 118249060), (241, 82921540), (260, 76861889), (338, 59124530), (482, 41460770), (676, 29562265), (845, 23649812), (964, 20730385), (1205, 16584308), (1690, 11824906), (2410, 8292154), (3133, 6378580), (3380, 5912453), (4820, 4146077), (6266, 3189290), (12532, 1594645), (15665, 1275716), (24533, 814580), (31330, 637858), (40729, 490660), (49066, 407290), (62660, 318929), (81458, 245330), (98132, 203645), (122665, 162916)]