20972730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:144

約数の個数: 96

約数和(自身を含む): 55702080

約数和(自身を除く): 34729350

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 41, 51, 59, 82, 85, 102, 118, 123, 170, 177, 205, 246, 255, 289, 295, 354, 410, 510, 578, 590, 615, 697, 867, 885, 1003, 1230, 1394, 1445, 1734, 1770, 2006, 2091, 2419, 2890, 3009, 3485, 4182, 4335, 4838, 5015, 6018, 6970, 7257, 8670, 10030, 10455, 11849, 12095, 14514, 15045, 17051, 20910, 23698, 24190, 30090, 34102, 35547, 36285, 41123, 51153, 59245, 71094, 72570, 82246, 85255, 102306, 118490, 123369, 170510, 177735, 205615, 246738, 255765, 355470, 411230, 511530, 616845, 699091, 1233690, 1398182, 2097273, 3495455, 4194546, 6990910, 10486365, 20972730]

約数ペア:

[(1, 20972730), (2, 10486365), (3, 6990910), (5, 4194546), (6, 3495455), (10, 2097273), (15, 1398182), (17, 1233690), (30, 699091), (34, 616845), (41, 511530), (51, 411230), (59, 355470), (82, 255765), (85, 246738), (102, 205615), (118, 177735), (123, 170510), (170, 123369), (177, 118490), (205, 102306), (246, 85255), (255, 82246), (289, 72570), (295, 71094), (354, 59245), (410, 51153), (510, 41123), (578, 36285), (590, 35547), (615, 34102), (697, 30090), (867, 24190), (885, 23698), (1003, 20910), (1230, 17051), (1394, 15045), (1445, 14514), (1734, 12095), (1770, 11849), (2006, 10455), (2091, 10030), (2419, 8670), (2890, 7257), (3009, 6970), (3485, 6018), (4182, 5015), (4335, 4838)]