71879960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 166730400

約数和(自身を除く): 94850440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 89, 122, 178, 244, 305, 331, 356, 445, 488, 610, 662, 712, 890, 1220, 1324, 1655, 1780, 2440, 2648, 3310, 3560, 5429, 6620, 10858, 13240, 20191, 21716, 27145, 29459, 40382, 43432, 54290, 58918, 80764, 100955, 108580, 117836, 147295, 161528, 201910, 217160, 235672, 294590, 403820, 589180, 807640, 1178360, 1796999, 3593998, 7187996, 8984995, 14375992, 17969990, 35939980, 71879960]

約数ペア:

[(1, 71879960), (2, 35939980), (4, 17969990), (5, 14375992), (8, 8984995), (10, 7187996), (20, 3593998), (40, 1796999), (61, 1178360), (89, 807640), (122, 589180), (178, 403820), (244, 294590), (305, 235672), (331, 217160), (356, 201910), (445, 161528), (488, 147295), (610, 117836), (662, 108580), (712, 100955), (890, 80764), (1220, 58918), (1324, 54290), (1655, 43432), (1780, 40382), (2440, 29459), (2648, 27145), (3310, 21716), (3560, 20191), (5429, 13240), (6620, 10858)]