642544100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:390

約数の個数: 144

約数和(自身を含む): 1608647040

約数和(自身を除く): 966102940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 44, 46, 50, 55, 92, 100, 109, 110, 115, 218, 220, 230, 233, 253, 275, 436, 460, 466, 506, 545, 550, 575, 932, 1012, 1090, 1100, 1150, 1165, 1199, 1265, 2180, 2300, 2330, 2398, 2507, 2530, 2563, 2725, 4660, 4796, 5014, 5060, 5126, 5359, 5450, 5825, 5995, 6325, 10028, 10252, 10718, 10900, 11650, 11990, 12535, 12650, 12815, 21436, 23300, 23980, 25070, 25300, 25397, 25630, 26795, 27577, 29975, 50140, 50794, 51260, 53590, 55154, 58949, 59950, 62675, 64075, 101588, 107180, 110308, 117898, 119900, 125350, 126985, 128150, 133975, 137885, 235796, 250700, 253970, 256300, 267950, 275770, 279367, 294745, 507940, 535900, 551540, 558734, 584131, 589490, 634925, 689425, 1117468, 1168262, 1178980, 1269850, 1378850, 1396835, 1473725, 2336524, 2539700, 2757700, 2793670, 2920655, 2947450, 5587340, 5841310, 5894900, 6425441, 6984175, 11682620, 12850882, 13968350, 14603275, 25701764, 27936700, 29206550, 32127205, 58413100, 64254410, 128508820, 160636025, 321272050, 642544100]

約数ペア:

[(1, 642544100), (2, 321272050), (4, 160636025), (5, 128508820), (10, 64254410), (11, 58413100), (20, 32127205), (22, 29206550), (23, 27936700), (25, 25701764), (44, 14603275), (46, 13968350), (50, 12850882), (55, 11682620), (92, 6984175), (100, 6425441), (109, 5894900), (110, 5841310), (115, 5587340), (218, 2947450), (220, 2920655), (230, 2793670), (233, 2757700), (253, 2539700), (275, 2336524), (436, 1473725), (460, 1396835), (466, 1378850), (506, 1269850), (545, 1178980), (550, 1168262), (575, 1117468), (932, 689425), (1012, 634925), (1090, 589490), (1100, 584131), (1150, 558734), (1165, 551540), (1199, 535900), (1265, 507940), (2180, 294745), (2300, 279367), (2330, 275770), (2398, 267950), (2507, 256300), (2530, 253970), (2563, 250700), (2725, 235796), (4660, 137885), (4796, 133975), (5014, 128150), (5060, 126985), (5126, 125350), (5359, 119900), (5450, 117898), (5825, 110308), (5995, 107180), (6325, 101588), (10028, 64075), (10252, 62675), (10718, 59950), (10900, 58949), (11650, 55154), (11990, 53590), (12535, 51260), (12650, 50794), (12815, 50140), (21436, 29975), (23300, 27577), (23980, 26795), (25070, 25630), (25300, 25397)]