20339820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^3\times {\mathrm{23}}^1$

素因数の和:89

約数の個数: 144

約数和(自身を含む): 68402880

約数和(自身を除く): 48063060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 30, 34, 36, 45, 46, 51, 60, 68, 69, 85, 90, 92, 102, 115, 138, 153, 170, 180, 204, 207, 230, 255, 276, 289, 306, 340, 345, 391, 414, 460, 510, 578, 612, 690, 765, 782, 828, 867, 1020, 1035, 1156, 1173, 1380, 1445, 1530, 1564, 1734, 1955, 2070, 2346, 2601, 2890, 3060, 3468, 3519, 3910, 4140, 4335, 4692, 4913, 5202, 5780, 5865, 6647, 7038, 7820, 8670, 9826, 10404, 11730, 13005, 13294, 14076, 14739, 17340, 17595, 19652, 19941, 23460, 24565, 26010, 26588, 29478, 33235, 35190, 39882, 44217, 49130, 52020, 58956, 59823, 66470, 70380, 73695, 79764, 88434, 98260, 99705, 112999, 119646, 132940, 147390, 176868, 199410, 221085, 225998, 239292, 294780, 299115, 338997, 398820, 442170, 451996, 564995, 598230, 677994, 884340, 1016991, 1129990, 1196460, 1355988, 1694985, 2033982, 2259980, 3389970, 4067964, 5084955, 6779940, 10169910, 20339820]

約数ペア:

[(1, 20339820), (2, 10169910), (3, 6779940), (4, 5084955), (5, 4067964), (6, 3389970), (9, 2259980), (10, 2033982), (12, 1694985), (15, 1355988), (17, 1196460), (18, 1129990), (20, 1016991), (23, 884340), (30, 677994), (34, 598230), (36, 564995), (45, 451996), (46, 442170), (51, 398820), (60, 338997), (68, 299115), (69, 294780), (85, 239292), (90, 225998), (92, 221085), (102, 199410), (115, 176868), (138, 147390), (153, 132940), (170, 119646), (180, 112999), (204, 99705), (207, 98260), (230, 88434), (255, 79764), (276, 73695), (289, 70380), (306, 66470), (340, 59823), (345, 58956), (391, 52020), (414, 49130), (460, 44217), (510, 39882), (578, 35190), (612, 33235), (690, 29478), (765, 26588), (782, 26010), (828, 24565), (867, 23460), (1020, 19941), (1035, 19652), (1156, 17595), (1173, 17340), (1380, 14739), (1445, 14076), (1530, 13294), (1564, 13005), (1734, 11730), (1955, 10404), (2070, 9826), (2346, 8670), (2601, 7820), (2890, 7038), (3060, 6647), (3468, 5865), (3519, 5780), (3910, 5202), (4140, 4913), (4335, 4692)]